Initial feeding of wolf fish (Anarhichas lupus L.) fry

Ringø, Einar; Olsen, Rolf Erik; Bøe, Bjarne

doi:10.1016/0044-8486(87)90182-7

Cited by 34 publications

(10 citation statements)

References 19 publications

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“…The common wolf‐fish, A. lupus , produces large, relatively lipid‐rich eggs that hatch after protracted incubation (Ringø et al 1987; Pavlov & Moksness 1994; Tveiten 2001). The eggs of the spotted wolf‐fish are similar in size to those of the common wolf‐fish and several salmonid species, and also have protracted incubation times.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The eggs of common wolf‐fish, A. lupus , are relatively lipid‐rich (Ringø, Olsen & Bøe 1987), a characteristic of eggs that have long incubation times (Sargent et al 2002). In addition, the lipids contain high proportions of the fatty acids – DHA, 18:1 and 16:0 (Ringø et al 1987) – most frequently encountered in the eggs of many fish species (Kaitaranta & Linko 1984; Tocher & Sargent 1984; Anderson et al 1990; Sargent et al 2002). However, EPA was the fatty acid present at highest concentration in common wolf‐fish eggs (Ringø et al 1987), and its concentration (24%) was much higher than usually reported for the eggs of other fish species (Kaitaranta & Linko 1984; Tocher & Sargent 1984; Anderson et al 1990; Sargent et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…The present study was undertaken to examine the fatty acid composition of eggs produced by spotted wolf‐fish broodstock held in culture. The aims were to provide a comparison with data for common wolf‐fish (Ringø et al 1987), and to investigate whether there were any simple indices that could be used as predictors of egg survivorship from the time of stripping to hatch. In addition, we describe the changes in egg lipids and fatty acid compositions of spotted wolf‐fish eggs that occur during embryonic development.…”

Section: Introductionmentioning

confidence: 99%

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Influence of egg lipids and fatty acids on egg viability, and their utilization during embryonic development of spotted wolf-fish, Anarhichas minor Olafsen

Tveiten¹,

Jobling²,

Andreassen

2004

Aquac Research

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The changes in egg lipids and fatty acid compositions that occur during embryonic development of spotted wolf-¢sh, Anarhichas minor, were examined by monitoring individual egg batches from the time of spawning (egg stripping) until hatching. The lipids, present as 3.7 AE 0.1% of the wet mass of the freshly stripped eggs, contained high percentages of monoenes (monounsaturated fatty acids (MUFAs), ca. 33%) and polyenes (ca. 43%) and approximately 20% saturated fatty acids (SFAs). The fatty acid pro¢les were dominated by a small number of fatty acids. The major SFA was 16:0 (ca. 14%), the dominant MUFA was 18:1 n-9 (ca. 21%), and among the polyenes, the n-3 highly unsaturated fatty acids (HUFAs) 22:6 n-3 docosahexaenoic acid (DHA) and 20:5 n-3 eicosapentaenoic acid (EPA) were present in the highest concentrations (EPA, ca. 16%; DHA, ca. 19%). The n-6 HUFA 20:4 n-6 arachidonic acid (AA) was present as ca. 1% of the total fatty acids in the freshly stripped eggs. This resulted in an AA:EPA of ca. 0.07, which is lower than reported for eggs of many other ¢sh species. As embryonic development progressed, the percentage contribution of AA to the total fatty acids almost doubled. There were also increases in the relative proportions of SFAs (due mainly to an increase in the percentage of 16:0 to ca. 16% at hatch) and DHA (to ca. 23%), and there was a corresponding decrease in the percentage of MUFAs (mostly brought about by a decrease in the percentage of18:1n-9 to ca. 18% at hatch). The most marked changes occurred towards the end of incubation. The percentage of EPA changed little during incubation. This implies that there was selective retention of DHA, 16:0 and AA, and these fatty acids were probably incorporated into cell membranes. MUFAs, particularly 18:1 n-9, seem to have been catabolized to provide energy for the developing embryo, and some EPA also seems to have been utilized as an energy source. Survival of eggs to the eyed stage (range ca. 10^80%) and to hatch (ca. 5^75%) was negatively correlated with the %AA, %EPA and AA:DHA of the freshly stripped eggs. There was also a negative correlation between AA:EPA and egg survival, which implies that there is not a universal requirement for a high AA:EPA to ensure high rates of survival of ¢sh eggs.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of egg lipids and fatty acids on egg viability, and their utilization during embryonic development of spotted wolf-fish, Anarhichas minor Olafsen

Tveiten¹,

Jobling²,

Andreassen

2004

Aquac Research

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“…4.5 0.0%, 4.6 0.1%, 4.4 0.0%, 3.6 0.0% , . (Watanabe et al, 1984;Fraser et al, 1987;Tomas et al, 2005), (Whyte, 1987;Whyte et al, 1990;His and Maurer, 1988) (Holland and Spencer, 1973;Waldock and Nascimento, 1979) (Ringo et al, 1987;Sargent et al, 1989).…”

Section: 서 론mentioning

confidence: 99%

Differences in Egg Quality and Larval Development among Four Populations of Sea Squirt Halocynthia roretzi Adults

Hur¹,

Kim²,

Lim³

et al. 2011

Korean Journal of Fisheries and Aquatic Sciences

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To compare four populations of sea squirt Halocynthia roretzi adults, their egg quality and larval development were investigated in the hatchery. The populations were: south sea wild (SSW), south sea cultured (SSC), east sea wild (ESW) and Iwate Japan cultured (IJC). Egg quality and larval development were compared using 13 factors (fertilization rate and diameter, proximate composition, amino acid and fatty acid contents of eggs, hatching rate and various sizes of tadpole larvae) which were obtained from each population. Fertilized egg diameter, hatching rate and size of tadpole larvae were significantly different among the four populations (P<0.05). Eggs were produced with higher crude protein (5.20 0.00% SSW, 4.71 0.01% ESW, 4.66 0.01% SSC and 3.96 0.01% IJC) and lipid (1.22 0.01% ESW, 1.01 0.00% SSW, 0.77 0.01% SSC and 0.69 0.00% IJC,) contents from domestic wild populations than from Japanese or cultured populations. Also amino acid and fatty acid contents were different. The extent of similarity between domestic and Japanese populations (30.5% IJC:SSW, 34.3% IJC:SSC and 40.7% IJC:ESW) was relatively low but was very high between SSW and SSC (73.9%). These results may have been due to differences in the abundance of food types and environmental conditions in the four localities and consequent differences in the diets of the sea squirts.

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Production and Nutritional Value of Copepods

Støttrup¹

2003

Live Feeds in Marine Aquaculture

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Initial feeding of wolf fish (Anarhichas lupus L.) fry

Cited by 34 publications

References 19 publications

Influence of egg lipids and fatty acids on egg viability, and their utilization during embryonic development of spotted wolf-fish, Anarhichas minor Olafsen

Influence of egg lipids and fatty acids on egg viability, and their utilization during embryonic development of spotted wolf-fish, Anarhichas minor Olafsen

Differences in Egg Quality and Larval Development among Four Populations of Sea Squirt Halocynthia roretzi Adults

Production and Nutritional Value of Copepods

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